【電(dian)位器接法】電(dian)位器的工作原理是(shi)什么 電(dian)位器怎么接

電位器怎么接

一般的電位器，中(zhong)間的是(shi)動(dong)(dong)(dong)片(pian)(pian)(pian)，所以(yi)測量電阻的話(hua)1。3腳(jiao)是(shi)總(zong)電阻，動(dong)(dong)(dong)片(pian)(pian)(pian)動(dong)(dong)(dong)不動(dong)(dong)(dong)阻值都不會變，接12，阻值從順時針方向變大（動(dong)(dong)(dong)片(pian)(pian)(pian)動(dong)(dong)(dong)的話(hua)），接2，3就是(shi)反的.6個腳(jiao)叫雙聯(lian)電位器，就是(shi)2個單聯(lian)做在一(yi)起了(le)，8腳(jiao)的應該是(shi)帶了(le)一(yi)個開(kai)關，一(yi)般在汽車音響上用的教多。

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電位器的工作原理是什么

電(dian)(dian)(dian)位器(qi)，是用(yong)于分(fen)壓(ya)(ya)的(de)可變電(dian)(dian)(dian)阻(zu)器(qi)。在裸露的(de)電(dian)(dian)(dian)阻(zu)體上，緊壓(ya)(ya)著一(yi)至兩(liang)個可移金屬觸(chu)點(dian)。觸(chu)點(dian)位置確(que)定電(dian)(dian)(dian)阻(zu)體任一(yi)端與(yu)觸(chu)點(dian)間的(de)阻(zu)值。按材料(liao)分(fen)線繞、炭膜、實芯式電(dian)(dian)(dian)位器(qi)；按輸出與(yu)輸入(ru)電(dian)(dian)(dian)壓(ya)(ya)比與(yu)旋轉角度的(de)關系(xi)分(fen)直線式電(dian)(dian)(dian)位器(qi)(呈線性關系(xi))、函數(shu)電(dian)(dian)(dian)位器(qi)(呈曲線關系(xi))。主(zhu)要參數(shu)為阻(zu)值、容差、額(e)定功率。廣泛用(yong)于電(dian)(dian)(dian)子設備，在音響和接收機中作音量(liang)控制用(yong)。

當電阻體的兩個固定觸電之間外加一個電壓時，通過轉動或滑動系統改變觸點在電阻體上的(de)位(wei)置(zhi)，在(zai)動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)與(yu)固(gu)(gu)定觸(chu)(chu)(chu)(chu)點(dian)(dian)之間(jian)(jian)便可(ke)得到(dao)一(yi)個(ge)與(yu)動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)位(wei)置(zhi)成(cheng)一(yi)定關系(xi)的(de)電(dian)壓(ya)。它大多是(shi)(shi)用作分壓(ya)器(qi)，這(zhe)是(shi)(shi)電(dian)位(wei)器(qi)是(shi)(shi)一(yi)個(ge)四端元(yuan)件。電(dian)位(wei)器(qi)基本上就(jiu)是(shi)(shi)滑(hua)(hua)動(dong)(dong)變(bian)阻器(qi)，有幾種(zhong)樣式，一(yi)般(ban)用在(zai)音(yin)箱音(yin)量(liang)開關和激光頭功率大小調節電(dian)位(wei)器(qi)是(shi)(shi)一(yi)種(zhong)可(ke)調的(de)電(dian)子元(yuan)件。它是(shi)(shi)由(you)一(yi)個(ge)電(dian)阻體和一(yi)個(ge)轉(zhuan)動(dong)(dong)或(huo)滑(hua)(hua)動(dong)(dong)系(xi)統(tong)組(zu)成(cheng)。當電(dian)阻體的(de)兩個(ge)固(gu)(gu)定觸(chu)(chu)(chu)(chu)電(dian)之間(jian)(jian)外加(jia)一(yi)個(ge)電(dian)壓(ya)時(shi)，通過轉(zhuan)動(dong)(dong)或(huo)滑(hua)(hua)動(dong)(dong)系(xi)統(tong)改變(bian)觸(chu)(chu)(chu)(chu)點(dian)(dian)在(zai)電(dian)阻體上的(de)位(wei)置(zhi)，在(zai)動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)與(yu)固(gu)(gu)定觸(chu)(chu)(chu)(chu)點(dian)(dian)之間(jian)(jian)便可(ke)得到(dao)一(yi)個(ge)與(yu)動(dong)(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)位(wei)置(zhi)成(cheng)一(yi)定關系(xi)的(de)電(dian)壓(ya)。

電位器型號規格

線繞電(dian)位器：WXX、WX1、WX3、WXW1—1、WXJ2、WXJ4、WX—010．030．050、WX1.5—1、WXDJ—1、WX5—11。實芯電(dian)位器；WS、WS5、WSW30。

合成碳膜(mo)電位器：WTH、WH5、WH7、WH9、WH15、WH17、WT、WT—1、WT—3、WTX—3、WHJ、WHJ—X、WHW、WH—20、WI。

分辨力

分辨力決定于電位器的理論精度。對于(yu)(yu)線(xian)繞(rao)電(dian)位(wei)(wei)器(qi)和線(xian)性(xing)電(dian)位(wei)(wei)器(qi)來說，分辨(bian)力(li)(li)是用動觸(chu)點在繞(rao)組上(shang)每移(yi)動一匝(za)所引(yin)起的電(dian)阻(zu)變化(hua)量與總電(dian)阻(zu)的百分比表示。對于(yu)(yu)具(ju)有函數特(te)性(xing)的電(dian)位(wei)(wei)器(qi)來說，由于(yu)(yu)繞(rao)組上(shang)每一匝(za)的電(dian)阻(zu)不同，故分辨(bian)力(li)(li)是個(ge)變量。此時，電(dian)位(wei)(wei)器(qi)的分辨(bian)力(li)(li)一般(ban)是指(zhi)函數特(te)性(xing)曲(qu)線(xian)上(shang)斜(xie)率最大(da)一段(duan)的平均分辨(bian)力(li)(li)。